Flora of North America species comparison

decumbent to erect, 5–70(–90) cm, glabrous or sparsely to densely puberulent, not glaucous.

ascending to erect, 15–40(–65) cm, glabrous, not glaucous.

basal and cauline, ± leathery or not, glabrous or basal ones sparsely to densely puberulent, not glaucous;

basal and proximal cauline (20–)45–160 × 3–40(–55) mm, blade obovate to oblanceolate, base tapered, margins entire, apex obtuse to acute;

cauline 1–6 pairs, sessile or proximals short- to long-petiolate, 16–100 × 5–45(–60) mm, blade ovate or oblanceolate to lanceolate, base cordate-clasping to clasping, apex obtuse to acute.

basal and cauline, not leathery, glabrous;

basal and proximal cauline (23–)40–90(–120) × 6–14(–24) mm, blade spatulate to elliptic, base tapered, margins entire, apex rounded to obtuse or acute;

cauline 3–6 pairs, sessile or proximals short- to long-petiolate, 24–115 × 4–15 mm, blade oblanceolate to lanceolate, base tapered to truncate or clasping, margins entire, apex obtuse to acute.

continuous or interrupted, cylindric to subsecund, 2–30 cm, axis glabrous, verticillasters 2–12, cymes 3–7-flowered, 2 per node;

proximal bracts ovate to lanceolate, 7–80 × (1–)3–35 mm;

peduncles and pedicels glabrous, peduncles to 20 mm, pedicels 1–9 mm.

interrupted, cylindric, 6–15 cm, axis glabrous, verticillasters 2–6, cymes 3–11-flowered, 2 per node;

proximal bracts lanceolate, 8–50 × 1–8 mm, margins entire;

peduncles and pedicels erect, glabrous.

calyx lobes ovate to lanceolate, 3–6.5 × 1.3–2.6 mm, apex acute to acuminate or cuspidate, glabrous;

corolla blue to violet, without nectar guides, ventricose, 12–25(–28) mm, glabrous externally, glabrous internally, tube 6–11 mm, throat gradually inflated, not constricted at orifice, 6–11 mm diam., 2-ridged abaxially;

stamens included or longer pair reaching orifice, pollen sacs divergent, navicular, 1.2–2(–2.2) mm, dehiscing incompletely, proximal 1/4–1/3 indehiscent, connective not splitting, sides hispid, hairs white, to 0.5 mm, sutures denticulate, teeth to 0.1 mm;

staminode 11–14 mm, included or reaching orifice, 0.3–0.6 mm diam., tip straight to recurved, distal 6–9 mm sparsely to moderately pilose to lanate, hairs orange, yellow, or white, to 1 mm;

style 9–16 mm.

calyx lobes ovate to lanceolate, 3–5.5 × 1.2–2.1 mm, apex acute to short-caudate, glabrous;

corolla white or lavender, without nectar guides, funnelform, 10–15 mm, glabrous externally, moderately yellow- or white-lanate internally abaxially, tube 4–5 mm, throat slightly inflated, 3–4 mm diam., 2-ridged abaxially;

stamens: longer pair reaching orifice or slightly exserted, pollen sacs opposite, navicular, 0.6–0.8 mm, dehiscing completely, connective splitting, sides glabrous, sutures smooth;

staminode 6–7 mm, included, 0.3–0.4 mm diam., tip straight, distal 0.5–3 mm moderately pilose, hairs yellow, to 0.8 mm, rarely glabrous;

style 7–8 mm.

7–15 × 5–10 mm.

4–7 × 3–4 mm, glabrous.

= 32.